n6mod wrote:If I'm reading all of this correctly, a BT-serial interface with TTL level I/O would work directly, without the 4201 board, right? I'm thinking of something like the BlueSMiRF from SparkFun.

Pardon, my lack of french language skill, however, I do share a similar interest in the Merlin project, could a kind soul, please give me a break down at where we are at (or where you are at) in english or danish, swedish, I only speak broken french and german, but I do know how to whistle in chinese <|:-o